Hammond, pictured filming Top Gear in Vietnam in 2008, was knocked out when he came off the bike

In a post on motoring social media site DriveTribe, titled Yes, I fell off but yes, I'm fine. Sorry, Hammond wrote: "I can confirm that yes, I fell off a. bike, many times, in fact and yes, I banged my head and everything else. But life goes on (sic)."

He added: "It's true, I did fall off a motorbike whilst filming recently for The Grand Tour in Mozambique. I banged my head, yes, along with pretty much everything else apart from my left thumb, which remains un-bruised.

"Can't tell you more yet about the how and why of it; that's all for later in the year on the show.

"As for injuries; well put it this way, I don't think I can get a book out of it."